Motions, and as many by the Rational Motions, which are Sight and Memory, at once: But in sleep both the sensitive and rational Motions make the figures without patterns, that is, exterior objects, which is the cause that they are often erroneous, whereas, if it were the former Impression of the Objects, there could not possibly be imperfect Dreams or Remembrances, for fading of Figures requires as much motion, as impression, and impression and fading are very different and opposite motions; nay, if Perception was made by Impression, there could not possibly be a fading or decay of the figures printed either in the Mind or Body, whereas yet, as there is alteration of Motions in self-moving Matter, so there is also an alteration of figures made by these motions. But you will say, it doth not follow, if Perception be made by Impression, that it must needs continue and not decay; for if you touch and move a string, the motion doth not continue for ever, but ceaseth by degrees; I answer, There is great difference between Prime self-motion, and forced or Artificial Motions; for Artificial Motions are onely an Imitation of Natural Motions, and not the same, but caused by Natural Motions; for although there is no Art that is not made by Nature, yet Nature is not made by Art; Wherefore we cannot rationally judg of Perception by comparing it to the motion of a string, and its alteration to the ceasing of that motion, for Nature moveth not by force, but freely. 'Tis true, 'tis the freedom in Nature for one man to give another a box on the Ear, or to trip up his heels, or for one or more men to fight with each other; yet these actions are not like the actions of loving Imbraces and Kissing each other; neither are the actions one and the same, when a man strikes himself, and when he strikes another; and so is likewise the action of impression, and the action of self-figuring not one and the same, but different; for the action of impression is forced, and the action of self-figuring is free; Wherefore the comparison of the forced motions of a string, rope, watch, or the like, can have no place here; for though the rope, made of flax or hemp, may have the perception of a Vegetable, yet not of the hand, or the like, that touched or struck it; and although the hand doth occasion the rope to move in such a manner, yet it is not the motion of the hand, by which it moveth, and when it ceases, its natural and inherent power to move is not lessened; like as a man, that hath left off carving or painting, hath no less skill then he had before, neither is that skill lost when he plays upon the Lute or Virginals, or plows, plants, and the like, but he hath onely altered his action, as from carving to painting, or from painting to playing, and so to plowing and planting, which is not through disability but choice. But you will say, it is nevertheless a cessation of such a motion. I grant it: but the ceasing of such a motion is not the ceasing